GENERICSD images?

[Emmanuel Vadot]

On Sat, 03 Nov 2018 17:24:17 -0600
Ian Lepore <ian at freebsd.org> wrote:

> On Sat, 2018-11-03 at 23:55 +0100, Bernd Walter wrote:
> > On Sat, Nov 03, 2018 at 03:18:21PM -0600, Warner Losh wrote:
> > > 
> > > On Sat, Nov 3, 2018 at 1:11 PM Bernd Walter <ticso at cicely7.cicely.d
> > > e> wrote:
> > > 
> > > > 
> > > > On Sat, Nov 03, 2018 at 11:51:38AM -0700, Russell Haley wrote:
> > > > > 
> > > > > On Sat, Nov 3, 2018 at 8:28 AM Bernd Walter <ticso at cicely7.cice
> > > > > ly.de>
> > > > wrote:
> > > > > 
> > > > > 
> > > > > > 
> > > > > > When and how would you use the GENERICSD images?
> > > > > > I assume they have a generic kernel, but do they need a
> > > > > > specific u-boot
> > > > > > installed before they can get used?
> > > > > > What systems are supported?
> > > > > > 
> > > > > Hi Bernd,
> > > > > 
> > > > > I could be mistaken, but I think you are referring to the SD
> > > > > images that
> > > > > can be downloaded for various Arm boards found here:
> > > > > https://www.freebsd.org/where.html
> > > > > 
> > > > > See the SD Image column for each currently supported FreeBSD
> > > > > version.
> > > > These
> > > > > 
> > > > > images are for "well supported" Arm boards and are an easy way
> > > > > to get up
> > > > > and running. To apply an image to an SD card, I typically use
> > > > > xzcat <img-name-here>.img.xz | dd of=/dev/da0 bs=1M
> > > > > 
> > > > > where ./dev/da0 is whatever device your SD card is found at
> > > > > (check dmesg
> > > > if
> > > > > 
> > > > > you're not sure. "geom part list /dev/da0" can also be helpful
> > > > > )
> > > > > 
> > > > > UFS will automatically grow the partition to the size of the SD
> > > > > card on
> > > > > first boot.
> > > > > 
> > > > > If you wish to create your own image, you can look at crochet
> > > > > (a build
> > > > too
> > > > > 
> > > > > written in bash) or there is an excellent write up by Udit on
> > > > > building
> > > > > custom images here:
> > > > > 
> > > > http://uditagarwal.in/index.php/2018/04/17/building-freebsds-sdio
> > > > -driver-for-beaglebone-black/
> > > > > 
> > > > > 
> > > > > Hope that helps?
> > > > No, I didn't ask about those images in general, I specifically
> > > > asked about
> > > > the use case of the GENERICSD image.
> > > > AFAIK crochet isn't advised anymore.
> > > > But the link is interesting, although unrelated to my question
> > > > and it is
> > > > specifically about beaglebones - Allwinner based boards have to
> > > > be handled
> > > > differently as they expect their bootcode at a specific media
> > > > location.
> > > > 
> > > We now have a GENERIC kernel. This image is built with that kernel.
> > > You're
> > > expected to roll your own u-boot into this image for the board you
> > > are
> > > using. There are several u-boot ports that are known to work (or
> > > worked at
> > > one time).
> > That's a good simplification.
> > I already had known about the GENERIC kernel, but this image was new
> > for
> > me as I wondered how it is handling the board specific boot code.
> > 
> > > 
> > > There's a script that will add u-boot for the board based on
> > > metadata the
> > > port installs, but I'm having trouble finding it at the moment to
> > > give you
> > > more specifics...
> > Would be cool to know when you or someone else find it.
> > So far searching for GENERICSD only showed several fileservers.
> > 

 Warner was refering to this :
https://gist.github.com/evadot/1bcad7c4c1e5cc7f9a692f4d19ab5421

 I need to make a package out of this so everybody can start using it
and find bugs/make improvement.

> A cool thing that could come of this is a website where you choose your
> board type and it creates on the fly a burnable image for you to
> download from the GENERICSD plus the board-specific boot stuff.

 That was the main goal of the GENERICSD image + u-boot-install, now
that we have 13 branched I may start again working toward more generic
arm sd images.

> -- Ian
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-- 
Emmanuel Vadot <manu at bidouilliste.com> <manu at freebsd.org>